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authorPeter Chen <peter.chen@freescale.com>2014-11-05 09:58:32 +0300
committerPeter Chen <peter.chen@freescale.com>2015-08-14 05:03:56 +0300
commited6e5eb50f7f07561d6a40f18bc11484736098db (patch)
treedce4741eb70ab31c643693ea16ee5cb34f408668 /drivers/usb
parent65668718f2c5b76d5f4513564a3c56672bb07892 (diff)
downloadlinux-ed6e5eb50f7f07561d6a40f18bc11484736098db.tar.xz
usb: chipidea: usbmisc_imx: add non-burst setting for imx6
With this setting and AHBBRST at SBUSCFG as "Incremental burst of unspecified length", each non-burst size can be taken as single transfer. It is benefit for non-burst size transfer. Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/chipidea/usbmisc_imx.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 3cefd49ddb00..5ddab30ee240 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -54,6 +54,7 @@
#define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
#define MX53_USB_PLL_DIV_24_MHZ 0x01
+#define MX6_BM_NON_BURST_SETTING BIT(1)
#define MX6_BM_OVER_CUR_DIS BIT(7)
#define MX6_BM_WAKEUP_ENABLE BIT(10)
#define MX6_BM_ID_WAKEUP BIT(16)
@@ -255,14 +256,21 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
if (data->index > 3)
return -EINVAL;
+ spin_lock_irqsave(&usbmisc->lock, flags);
+
if (data->disable_oc) {
- spin_lock_irqsave(&usbmisc->lock, flags);
reg = readl(usbmisc->base + data->index * 4);
writel(reg | MX6_BM_OVER_CUR_DIS,
usbmisc->base + data->index * 4);
- spin_unlock_irqrestore(&usbmisc->lock, flags);
}
+ /* SoC non-burst setting */
+ reg = readl(usbmisc->base + data->index * 4);
+ writel(reg | MX6_BM_NON_BURST_SETTING,
+ usbmisc->base + data->index * 4);
+
+ spin_unlock_irqrestore(&usbmisc->lock, flags);
+
usbmisc_imx6q_set_wakeup(data, false);
return 0;